US Patent: 3,945,694
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| Toolhead
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Patentee:
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| Bernard D. Vaillette (exact or similar names) - Leominster, Worcester County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 04, 1974 |
| Granted: |
Mar. 23, 1976 |
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Joel Havens
"Vintage Machinery" entry for Heald Machine Co.
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Description: |
| Abstract:
A toolhead having a spindle mounted in axially spaced bearings wherein one of the bearings is allowed to slide axially during dynamic effects on the bearings or thermal expansion and contraction of the spindle, the axial movement being made possible by the provision of rows of barrel-shaped rollers.
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